I used to get the bad redirect (missing the www) pretty much every single login up until quite recently. As for the weird tags - if you get errors or hung pages or things like that on other pages I'd do a test for packet loss or weird things on the data from the adsl with wireshark as I know that whenever it rains and the noise margins change a bit (we have our telco cable underground here in the UK) I get a couple hung pages with weird formatting and funny characters here and there for a few minutes until the modem resynchronizes with the exchange at a slightly lower data rate (as in 18700kbps can be a page of garbage and 18560kbps can be fine).

That said - PGD has been doing some weird things of late: the 503s and reaaaaly long load times are mostly gone now but every now and then (every day or two) I'll run into some database error, or a page that wont load and the like. Though I will say that it is a lot better than the last few weeks.